Head gate



l aiented 12, 1927 UNITED STATE PATENT GFFH'JE.

JAMES A. SMITHAM, OF S AN JUAN. TEXAS, ASSIGNOR TS VALLEY IRON WORKS, OF SAN JUAN, TEXAS, A CORPORATION (3F TEXAS.

HEAD GATE.

Application filed June 23, 1926.

My invention relates to head or water gates and particularly to the cover or valve; and the object is to provide a valve or cover which will prevent leakage and which will be automatically locked when it is closed'and in addition to the automatic lock, the head or gate is provided with a manually actuated lock which co-operates with the automatic lock. Another object is to make provision for locking the gate at any elevation to which the gate may be raised. Another object is to provide the gate with both a vertical motion and a rocking motion. Another object is to simplify the construction and to make a stronger frame. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application.

Fig. 1 is a front elevation. Fig. 2 is a side elevation of the gate or head with the jack notshown. Fig. 3 is a side elevation of the head gate with the valve shown in section. Fig. 4 is .a plan view of the valve with the front brace left ofl, that is, the front brace of the cross head is omitted. Fig. 5 is a horizontal section taken on the line 55 of Fig. 1. Fig. 6 is a detail view of the threaded plunger.

Similar characters of reference are used to indicate the same parts throughout the several views. 7

The improved gate or head is provided with upright frame members 1 and 2. A rack frame member 3 is bolted to the mem' bers 1 and 2 and serves as a part of the frame of the head gate. A hell or union 4 is to be embedded in concrete or connected with a pipe. side bolted to the uprights 1 and 2. The frame members 1 and 2 are partly embedded in concrete. See Fig. 5. The frame memhere 1 and 2 will be rigid with the hell 4 whether this bell is embedded in concrete or connected to a pipe. The gate 6 is pivotally mounted on a horizontal brace 7 or crosshead which is slidably mounted on the frame members 1 and 2, by means of flanged guides 8 which move vertically on the flanges of the uprights 1 and 2. The gate 6 has a shank or handle 9 to which is bolted a lever or handle 10. The gate can be elevated manually by using the handle 10 when the This bell has a flange 5 on each Serial No. 1 19,505.

pressure of the Water is not great, but when there is great pressure of the water it is necessary to use a jack. WVhen the pressure lS not great, the handle 10 need not be provided with the rack 11, but when the water pressure is heavy, the rack 11 is necessary, and a jack is used to move the handle.

The gate 6 is carried by the cross-head or brace '5 and is connected to this brace by a worm or threaded plunger 12 which is bolted to the brace 7 by bolts 13 and the connection is completed by two internally threaded nut members 14 which are bolted to two lugs 15 which are cast on the gate 6. The gate 6 has a cavity 16 which receives the inner edges of the nut members 14. The worm 12 and the nut members 14 cause the gate 6 to move towards and from the mouth of the bell 4 when the gate is turned by the handle 10 by moving the handle to the right and left respectively. The handle 10 is turned to the right or clockwise to close the bell liquid tight and may be locked in such position by a dog 17 which is slidably mounted on the handle 10 and is adapted to engage the teeth of the rack frame 3.

The gate 6 can be elevated by the handle 10 and locked in the elevated position in the same manner, that is, by turning the handle to the right so that the gate will be pressed agplinst some part of the frame members 1 an 2. 1

The dog 17 is carried by a handle 18 and this handle may be locked tothe lever or handle 10. This will keep the gate 6 locked so that unauthorized persons cannot obtain water or other liquid.

At times when the flow of liquid is strong, a jack is necessary to lower the head gate, as the jack must force the gate down with sufficient force to overcome the momentum of the liquid. The jack is adapted to force the gate downwardly but not.upwardly.

When the liquid pressure is heavy, a ack is necessary to lower the gate 6. A second frame member 3 is attached to the uprights 1 and 2 and the jack frame members 19 and 20 are mounted on the frame members 3 and 3. See Figs. 1 and 3. The members 19 and 20 have flanges 21 which catch under flanges on the frame members 3 and 3 and are braced thereon by bolts 22. A pinion 23 is journaled in the bearing members 20 and 19 and a crank 24 is provided for the pinion 23. Guide members 25 project on both sides of the handle 10 and hold the'pinion 23 in line to mesh Withtherack 11. I

The flanges 21 are caught under the frame bell orunion attached thereto, across-head slidably engaging said frame and a gate carrying said cross-head, means for tighteningsaidgate against'sai'd bell consisting of a threaded plunger attached to said crosshead and a threaded cla'mp' attached to said gate an engaging saidpluiigerga handle at- The crank 24: is then turned =to tached to said gate, a -rack-attached to said frame, a dog carried by said handle adapted to engage said rack, and means for locking said dog to said rack at different positions of said gate.

2. A head gate comprising a frame having uprightmembers and a bell attached to said upright members, a gate provided With a cross= head having. guide flanges having sliding engagement with said uprights, a handle for moving said gate vertically and turning said gate,:means to'r locking said gate in anypositi on to which it may be turneehand means for operati'velyconnecting said cross-head and said gate consisting of a threaded nut mem'ber attached to said gate and a threaded plunger attached to said cross-head.

In testimony whereof," I set myhand, this 10thdayof Aiigust, 1925.

JAMESA. SMITHAM. 

